Vulnerability Description
A redirect vulnerability in the `fastify-static` module version >= 4.2.4 and < 4.4.1 allows remote attackers to redirect Mozilla Firefox users to arbitrary websites via a double slash `//` followed by a domain: `http://localhost:3000//a//youtube.com/%2e%2e%2f%2e%2e`.A DOS vulnerability is possible if the URL contains invalid characters `curl --path-as-is "http://localhost:3000//^/.."`The issue shows up on all the `fastify-static` applications that set `redirect: true` option. By default, it is `false`.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Fastify | Fastify-Static | >= 4.2.4, < 4.4.1 |
Related Weaknesses (CWE)
References
- https://hackerone.com/reports/1361804ExploitIssue TrackingPatch
- https://hackerone.com/reports/1361804ExploitIssue TrackingPatch
FAQ
What is CVE-2021-22964?
CVE-2021-22964 is a vulnerability with a CVSS score of 8.8 (HIGH). A redirect vulnerability in the `fastify-static` module version >= 4.2.4 and < 4.4.1 allows remote attackers to redirect Mozilla Firefox users to arbitrary websites via a double slash `//` followed by...
How severe is CVE-2021-22964?
CVE-2021-22964 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-22964?
Check the references section above for vendor advisories and patch information. Affected products include: Fastify Fastify-Static.